Question

Q15.Give difference between arteries veins and capillary.
Q16. Explain the process of nutrition in amoeba.
Q17.Give the role of liver in human beings.
Q18.Distinguish between breathing and respiration.
Q19. Why is small intestine in herbivores longer than carnivores.
Q20. Why do veins have thin walls as compared to arteries.


please gives answers of all these questions.​

Answer 1

There are a number of differences between veins and arteries.

Veins:

carry blood from the tissues of the body back to the heart

are usually positioned closer beneath the surface of the skin

are less muscular than arteries, but contain valves to help keep blood flowing in the right direction, usually toward the heart

would collapse if blood flow stops.

Arteries:

carry blood away from the heart to the tissues of the body

are usually positioned deeper within the body

are more muscular than veins, which helps in transporting blood that is full of oxygen efficiently to the tissues

would generally remain open if blood flow stopped, due to their thick muscular layer.

Answer 2

Answer:

This is the reason write in your own words